uther:
That is not what I said, or at least not what I intended to say. Perhaps I can re-phrase it. Purgatory is a doctrine that only makes sense in the context of the totality of Catholic Doctrine. But that totality does not depend on the doctrine of Purgatory. That totality of Catholic Doctrine is that which was given from Christ to the apostles, which are Biblical though sometimes not explicitly, which are part of the Tradition handed down in writing and orally (see Jn 21:25. 2 Thes 2:15, 2 Tim. 2:2)
Again, I don’t know what it is, but it sounds like you are saying that Purgatory makes sense regardless if it exists or not and it is assumed to be “handed down” by the Apostles via Christ, albeit not recorded. Again, it bears repeating, considering its absence from Scripture, its absence from the teachings of the earliest church, and its denial by the Eastern Church (who claims the same pedigree as Rome) who holds these “Traditions” as well, I don’t see how it can be assumed to be handed down. Thus, if this teaching makes sense in light of Catholic soteriology, that’s all it can do, but it doesn’t prove that such a state or place exists.
John 21:25 speaks of things Christ “did” and not things he taught or said.
2 Thessalonians 2:15 doesn’t lend credence that purgatory was taught, but only that the Apostles were teaching by word and letter. It still doesn’t mean that purgatory was being taught in light of what I’ve told you.
2 Timothy 2:2 doesn’t lend to purgatory as well. Paul is telling Timothy that everything he’s learned teach it to faithful men—those who will be able to teach others.
None of these verses add to whether or not purgatory was being taught by Christ, Paul, or the rest of the Apostles, only that they were teaching men orally and through their writings. Again, there is no reason to believe purgatory was ever taught in light of its absence from the earliest church.
New Testament Scripture is really only one part of the Tradition, the Faith, given from Christ to the apostles. It was later assembled and given the official Church approval as Holy Spirit inspired and elevated to the status of Holy Scripture and we have adhered to that since. The chronology is important.)
I have yet to see an extra-biblical Tradition which can be traced to an Apostle, and “which” Apostle at that. Again, I see a movement towards other issues which have no bearing on this subject. Again, I hate to be the stickler, but you know my story.
However, if you embark on the radical innovations of the 16th century Reformers, the doctrine of purgatory becomes a stumbling block.
Again, I repeat, purgatory doesn’t stand or fall on what the Reformers taught, but on whether or not it was taught by Christ to the Apostles and onward to the church. The Reformers didn’t question it because it conflicted with their views on sola fide, but because it was a teaching with no basis in Scripture or the earliest church. Luther, Calvin, etc. they all analyzed the doctrine from Scripture and from ancient writings and found it lacking, so,
no, it wasn’t based on what you call “radical innovations”, but on whether or not it was truly taught. I guess it is purgatory which should be termed a “radical innovation”

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Peace,
CM